河南省农户储粮昆虫种类与分布调查研究

INVESTIGATION OF SPECIES AND DISTRIBUTION ON STORED GRAIN INSECTS OF FARMER STORAGE IN HENAN PROVINCE

河南为我国农户储粮大省,了解农户储粮昆虫种类与发生对农户储粮害虫防治意义明显。现场采集调查了河南省12个地市62个农户储粮场所,共发现储粮昆虫46种,包括鞘翅目昆虫15科35种,鳞翅目昆虫4科6种,以及蛛形纲的拟蝎目1科1种。发现较多的害虫有印度谷螟、赤拟谷盗、玉米象等,其发现数量占所调查农户数量的50%以上。发现较多的天敌昆虫有米象小蜂;不同地市所采集的昆虫种类数量差异显著,采集到昆虫种类最多的地市有的达30种之多,采集到昆虫种类最少的地市只有6种,多数地市采集到的昆虫种类在10种左右。

A great quantity of grain was stored in farmer scale of Henan.Knowing the species and distribution of stored grain insect was basic work for farmer grain storage.Investigation of stored grain insect species and distribution in farmer grain storage located in 12 prefecture level cities in Henan province of China was carried out which included in 62 farmers or families by on-site sampling and collection.Forty six species of stored grain insects were found which included in thirty five species of fifteen families belonged to Coleopetra,six species of four families belonged to Lepidoptera and one species of Pseudoscorpionidea belonged to Arachnoidea.Plodia interpunctella、Tribolium castaneum and Sitophilus zeamais were found in more places than other insect.The farmer number of collected the insects was more than 50%of the invested farmer storage.Lariophagus distinguendus,nature enemy insect,was another species who was found in many places.Total number of insect species was varied sharply among of the survived prefectural level cities.The top number of the insect species collected in one prefectural level city was 30.The bottom number of the insect species found in one prefectural level city was 6 only.About ten species of the species were collected in many prefectural level cities.